Batman Forever
Contributed by - Richard

Cheat mode:
Press Left, Up, Left(2), A, B, Y at the game start screen. Change the
game type to normal mode and press Start. Choose a character and press
Start to display the cheat mode screen. This screen allows stage
selection, access to all weapons, and control of the Riddler in the
practice mode. 

Kill all enemies:
Enable the "Cheat mode" code. Press Start + L + R during game play to
kill all normal enemies. Press this sequence multiple times to kill
the Boss characters. 

Stage Select:
On the screen where you can change from "Training Mode" to "Normal
Mode," press Left, Up, Left, Left, A, B, Y. Change the game type to
"Normal," set the difficulty level and press Start. Then choose your
character like you normally would and press Start to access the Stage
Select screen. Finally, press Up, Down, Left and Right on the Control
Pad to choose the stage you want and press Start again to begin the
game.

Moves:
D=Down , U=Up, F=Forward, B=Back, L=L button, R=R button, Y=Y button,
A=A button, X=X, button.

Flash pellet:
D, D, F-B
Gas spray:
D, D, F, A
Cape Morph/ Electro Shield:
L-Y, Y, Y
Bomb (standard):
D, D, F-B
Roll Attack:
F, F-Y
Roll Retreat:
R-B, B-Y
Rocket boots:
F, F-X
Tranq. Darts:
F, D-A
Electro Staff Prod:
D, D, F-Y
Bat cuffs:
F, D-X
Slippery Goo:
F, F, D-B
Bat Bola:
D, D-A
Elcetric Pellet:
F, D-A
Force Wall:
D, D, D-B
Sticky Goo:
D, D-X